hey i assume you know about hboot. if u mess up in recovery i beleive you can fix it in hboot. gotta love hboot. this is what ive heared around the forums. apparently an ruu file is similar to an sbf. htc phones are harder to brick then moto's so keep that in mind. someone who has a little more experience should be able to help you a little more than this, but these are the basics that i am aware of when it comes to fixing the tb.